This is a story that shows, case-in-point, why Donald Trump was elected to the presidency.

Kate Steinle, a 32-year-old woman, was shot and killed while walking on a San Francisco pier with her father back at the beginning of campaign season. An illegal immigration who reportedly told police he was in the city because it provided him sanctuary was arrested and charged with her bold, daylight-time murder.

Trump cited this case several times in his presidential run, claiming – rightly so – that America was fed up with such immigration policies that let illegals commit vicious crimes against innocent U.S. citizens. Adding fuel to the fire was the fact Steinle’s killer had been previously deported for numerous felonies on several prior occasions.

And now?

Well, the issue is likely once again to fuel anger.

“U.S. Magistrate Judge Joseph Spero dismissed wrongful death claims filed by the family of 32-year-old Kathryn Steinle against the city and Sheriff Ross Mirkarimi. The judge, however, allowed a negligence claim against the federal government to move forward,” the Associated Press reported.

(Will Kate’s parents ever get justice?)

Why would the judge allow the federal government to be prosecuted – which really puts it in Trump’s administration, not the outgoing President Obama’s where it belongs – and not allow prosecution against the city for its sanctuary policy?

That’s the real problem.

America already has in place plenty of laws that prohibit illegals from crossing into the country and taking up residence. The issue, however, is that left-leaning politicians, driven by special interest pro-amnesty groups, have ignored these federal laws and instead opened their community doors to those who don’t legally belong.

San Francisco is one of those communities, and even after Steinle’s death, refused to change its sanctuary status.

Trump should go after these sanctuary cities, like he vowed in recent weeks, strip them of their federal funding – and perhaps use the power of his Justice Department to take some sort of punitive action on behalf of Steinle’s family, regardless of what this magistrate judge ruled. It’s why Trump was elected.